Associative learning is the event may be two stimuli or a response and its consequences
Answer:
The unique characteristic of earth is liquid water.
Explanation:
Answer: C. polyp
Explanation: The polyp is a sac-like stage of a cnidarian, with the mouth and tentacles on top.
Answer:
isotope of the element hydrogen called protium. Protium,
Explanation:
contains a single proton and a single electron, is the simplest atom.
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